Update git submodules
Update git submodules

* Update plugins/replication from branch 'stable-2.16'
  to 739be77f0037317ae64041125b2290aa6f012467
  - Only fire the specified pending event URI
    
    Previously the startup firing of pending events would fire every URI for
    a project ref combination on startup. To avoid duplicates, it only ever
    fired one round of every URI per project/ref combination. This had the
    side effect that if only a single URI were stored, presumably because
    the other URIs were completed before shutdown, this would result in the
    creation of way more replication events than necessary, presumably many
    duplicates of already completed pushes. Fix this behavior by only firing
    to the specific stored URI, and remove the duplicate project/ref
    filtering since that now would prevent firing to more than one URI for
    the same project/ref combination when there actually are stored events
    for multiple URIs. Add a test to confirm the correct new more limiting
    behavior.
    
    Bug: Issue 12779
    Change-Id: I56d314af2ecbf84362dda099fa28f1b8f82cefa7
    
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